Hi Queenie!
This story sort of slots in between Tomorrow Never Comes and The Sound of Time Passing,
Oooh! Those are old ones! Am sure I’ve read them on the Archives!
He sat up, wincing as the springs of the mattress creaked beneath him and hoping that he didn't wake Lois.
Huh, what now?
—wait. Lois? Why on earth...? He turned and looked down at the empty space beside him on the bed, running a hand over it for good measure. Lois wasn't there.
So, dreaming?
“Lois?”
The room remained still and quiet, cementing his feelings of foolishness. Then, after a moment, he heard a soft voice answer, “Clark?”
Lois reached down and took his hand in both of hers. “Clark,” she said softly, “It's 1999. You stopped Nightfall a little over five years ago.”
Oops?
“What?!” He opened his mouth, closed it, then shook his head. “I think I'd remember...” he trailed off, frowning in confusion at the woman who, logically, should be across town trying to call her family members for a final farewell chat. “...wouldn't I?”
Knocked his head on a rock?
Clark only heard the soft sounds of a baby burbling contentedly. “Get some sleep,” she said, smiling at him. “I'll tell you in the morning.”

Michael